JPS5878859A - Tilting device for car body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle body tilting device, and more particularly to a vehicle body tilting device suitable for tilting a vehicle body when a track vehicle passes through a high-speed curve.

As a conventional vehicle body tilting device, a pendulum type using rollers is well known. The pendulum-type vehicle body tilting device 1, as shown in iml 1, consists of a pair of rollers provided on a roller 2 mounted on a bogie 1'. It consists of 4 shaking pillows.

The vehicle body is supported on top of the swing pillow 4 via a spring S. - On the track, the resultant force of gravity W and centrifugal force P acts at an angle β on the floor plan, and for vehicles without a car body tilting device, the angle is 3! However, it can be made smaller by installing a vehicle body tilting device. Although the angle I is supposed to be zero, the angle β actually remains due to the friction of the rollers and the deflection of the spring force. For this reason, the passenger receives a lateral force of Wβ in Fslnβ, and feels that the ride is uncomfortable. Divided by gravity W is 7
Since β/i=β, β is equal to the acceleration parallel to the floor surface. In Fig. 2, when time t is plotted on the horizontal axis, 1 is for a vehicle without a pendulum-type vehicle body tilting device using rollers, and for a vehicle with a pendulum-type vehicle body tilting device using 1 company rollers. Indicates the floor lateral acceleration β.

Even if the vehicle has the pendulum type vehicle body tilting device (b), there is a drawback that the floor lateral acceleration β remains due to the above-mentioned reasons, and the riding comfort for passengers is poor. In response to this, recently, a method has been proposed in which a fluid operating mechanism such as an air cylinder is attached and the lateral acceleration of the floor is detected and controlled. This proposal adopts a control system that not only controls lateral acceleration caused by centrifugal force in Jiso, but also oscillations during high-speed straight running. As described above, although the above method has excellent features, it is less effective due to the method that improves the riding comfort on the - line as rattan 1 and removes only the negative effects of roller friction against vibration. It is an important issue to establish a method that can suppress mold by controlling the amount of air.

In view of the above points, the present invention provides a vehicle body tilting device that forcibly tilts the vehicle body to improve the riding comfort on the - line, and to eliminate the adverse effects of vibration caused by the rollers when traveling in a straight line. The purpose is to obtain a comfortable vehicle body tilting device.

In the present invention, a fluid operating mechanism such as an air cylinder is attached to the roller, detecting and controlling the lateral acceleration of the floor when passing through a curve, and fixing the fluid operating mechanism when traveling in a straight line. In addition to preventing the negative effects of ζ-filtering on vibration, one fluid operating mechanism takes charge of tilt control and fixing.The fixing piping and tilt control piping are separate, and the fixing piping and A check valve is installed between the fluid operating mechanism to improve responsiveness during tilt control and is a must! Furthermore, two of the above-mentioned fluid operating mechanisms are installed symmetrically with respect to the center 111 of the vehicle body, and one is used for tilt control in the main body. Two fluid-operated mechanisms are used, and a second fluid-operated mechanism is used for fixation during straight-line travel, providing appropriate control and fixing force.

Hereinafter, the present invention will be described in detail with reference to several embodiments.

3 and 4 are a cross-sectional view in the width direction of the vehicle body showing an embodiment of the vehicle body tilting device according to the present invention and a block diagram showing the control circuit], and FIG. 5 is a ride comfort at the - line. shows.

This is a graph in which the vertical axis shows the floor lateral acceleration and the horizontal axis shows the relationship with time. 3111sP and FIG. 4, the difference from the conventional example is that, first, a double-acting air cylinder 7 is used as the fluid operating mechanism, and a vehicle lateral acceleration detector and a compensation circuit 13. An inclination angle command transmitting unit consisting of an amplifier 14, a vehicle speed detector, and a cylinder fixing speed setting 1)
17. Comparison II Comprised of songs, fixed dispatcher's trust door, electromagnetic rush,! This is something I am concerned about.

The operation of the vehicle body tilting device configured as described above will be explained.

When the traveling speed of the vehicle is below a certain speed (for example, tf 50 Km/h @ degree for a regular express vehicle), the double-acting air cylinder 1
Fixed command transmitter! ! Since the qOFF signal is given to the electromagnetic valve unit, the air is sent to the air servo valve n that is supplied from the air source row, and the supply to the check valve 2 is stopped. On the other hand, a control signal is inputted to the air servo valve turtle from the tilt angle command transmitter U, and the two double-acting air cylinders 7 are moved in opposite directions to control the tilt of the vehicle body, and the tilt angle command transmitting unit U controls the tilt angle of the vehicle body. Bring the acceleration closer to Shizuku. Therefore, in the 111I running, the floor lateral acceleration of the vehicle body can be brought close to almost zero, as shown in FIG. 5C. Note that a and b in Fig. S are the same as a and b in Fig. 2. Next, when the vehicle runs at a certain speed or higher, the identification command transmitter rectangle sends an ON signal to the solenoid valve L.
9, the air supplied from the air source row is not sent to the air servo valve 4, but is sent to the fixing pipe 2. As a result, the two double-acting cylinders 1 are both subject to high pressure), and the rollers 3 are fixed so that they do not roll. Therefore, unnecessary transfer of the roller 3 due to vibration when traveling in a straight line at high speed is eliminated, and deterioration of riding comfort can be prevented.◇Air servo valve mK9! If air is supplied, electricity i
Since the valve 4 and the fixed piping port are closed, it has a slope control function, but in order to improve controllability, a single valve is installed between the fixed piping port and the double-acting air cylinder 7. It is effective to provide a stop valve to prevent the output flow rate of the servo valve 4 from entering the fixing piping, and to increase the responsiveness of the system with a small air flow rate. On the other hand, when air is not supplied to the air servo valve 4, there is no problem because the space between the air f-1f*21 and the slope control piping is naturally closed. As described above, according to the present invention, the fluid operating mechanism is used for both tilt control and fixing to reduce the exclusive space under the floor, and to construct a system with good controllability and low fluid consumption. Therefore, it is possible to improve the ride comfort when traveling at 1 ml Im, and also to eliminate the negative influence of the groove on the ride comfort even when traveling at high speed on a straight road.

Next, another embodiment of the present invention is shown in FIG. In S,
In this embodiment, one double-acting air cylinder 2 is installed in the horizontal direction between the rolling pin and the swing pillow of the truck.

1 is a tilt control pipe, I is a fixing pipe, In is a pressure reduction load to equalize the fixing force of both left and right vehicles of the double-acting cylinder 2, and 1 is a check valve. The vehicle body tilting device configured in this manner also has the same functions and effects as the above embodiment, and although the diameter of the double-acting air cylinder 2 is somewhat larger, it can be installed horizontally, and It also has the feature of being able to reduce space.

Another embodiment of the present invention is shown in 7th f! glK is shown.

In the figure, this example is shown first! The difference from the embodiment 5lIl is that the inclination control piping (to) is installed only in one of the two double-acting air cylinders 7. Therefore, compared to the above embodiment, the tilt control force for the same identification force is smaller. The inclination control force may be the frictional force of the rollers and the deflection of the pillow springs, etc., but the fixing force needs to have a margin for vibration components that exceed this force.By configuring it as in this embodiment, Appropriate control power can be provided. Moreover, ``controllability is improved by the increase in responsiveness of the tilt control system at this time,
This is particularly effective when air is used as the working fluid.

In the above embodiments, air is used as the working fluid.

This was developed because it is extremely simple to load a compressor on a railway vehicle and use it for opening/closing doors, braking, etc., but of course it is also possible to use hydraulic pressure to sufficiently perform the intended functions. be able to. In addition, in the embodiment of the present invention, the fixed command transmitter is configured with a vehicle speed detector and a comparator that changes the output signal when the output of the vehicle speed detector exceeds a certain value. The output signal may be changed by catching the exits of the curve entry signal transmitter and the passing signal transmitter installed at the curve entrance signal transmitter and the passing signal transmitter installed at Although the tilt angle command transmitter is composed of a vehicle lateral acceleration detector, a compensation circuit, and a servo amplifier, the compensation circuit and servo amplifier may be integrally constructed.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view in the width direction of the vehicle body showing a conventional pendulum type vehicle body tilting device, Figure 2 is a graph showing the lateral acceleration of the vehicle floor surface in the conventional vehicle shown in Figure 1, and the third figure is a vehicle body based on the 1jiK of the present invention. A sectional view in the vehicle body width direction of a vehicle equipped with a tilting device, FIG. 4 is a block diagram showing the control circuit of Hiroto 311, and sla is an original drawing of the vehicle body in the vehicle body tilting device of one embodiment shown in Hiroto 311 and No. 411. Graph showing lateral acceleration, part sai+
and j1711 is a block diagram showing a control circuit of another embodiment of the vehicle body tilting device according to the present invention. l...pendulum device, 3...roller, easy...
-・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・Compensation circuit, 14・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・CARBODY lateral acceleration detector Command transmitter, 16...
...Vehicle speed detector, audience...Comparator, error...
...Solenoid valve, Ri...Fluid source, A...
control valve, 22. m. Addition: Piping for tilt control, υ: Piping for fixing, Song: Load for pressure reduction, 7.2s...
...Double-acting pneumatic shilling agent Patent attorney Usui 1) Li Nakatsu 1 Figure 2rA 31'3 Figure

Claims (1)

[Scope of Claims] 1. A vehicle body tilting device in which a vehicle body is swingably supported on a bogie via a pendulum device, including a fluid operating mechanism provided in parallel to the north of the binding device for tilting the vehicle body, and a fluid operating mechanism for tilting the vehicle body. An inclination control pipe and a fixing pipe connected to the mechanism, a control valve whose output port is connected to the inclination control pipe, and an input port to the armpit control valve and an electromagnetic valve attached to the upper fixed pipe. A vehicle body tilting device comprising a valve, a fluid source that supplies fluid to the solenoid valve, a fixed command transmitter that operates the solenoid valve, and a tilt angle command transmitter that operates the control valve. ! 41 Scope of Permission 11jllll[KThlnte, above m
Two double-acting cylinders are arranged symmetrically with respect to the center of the vehicle body as a deactivation mechanism, and the inclination control piping is guided so that one end of the two double-acting cylinders is guided to the upper end and the other end is guided to the lower end, respectively. A car body tilting device characterized by leading the fixing piping to two double-acting cylinder ladders. 3. In claim 1, one double-acting cylinder is arranged as the fluid operating mechanism, and the fixing
4111. A vehicle body tilting device according to 4111, wherein one end of the tube is guided to the small cross section side of the double acting cylinder, and the other end is guided to both sides of the double acting cylinder through a pressure reducing load. 4.4 In Claim 1, two double-acting cylinders are arranged symmetrically with respect to the center line of the vehicle body as the fluid operating mechanism, and the inclination control piping is connected to the i-shift of the double-acting cylinders. A car body tilting device characterized by having four piping on one side, the front, the bottom, and the fixing piping being led to two double-acting type shillings. 5. Claim A1, characterized in that the fixed command transmitter is constituted by a vehicle speed detector and a comparator that changes the output signal when the output of the vehicle speed detector reaches a certain value or more. Vehicle body tilting device 6, a vehicle body according to claim 881, characterized in that the tilt angle command transmitter is constituted by a vehicle lateral acceleration detector, a compensation circuit, and a servo amplifier, and an air servo valve is used as a control valve. Tilting device 07. The vehicle body tilting device according to claim 1, characterized in that a check valve is provided between the fixing pipe and the fluid operating mechanism.